ITU recommendations, V-series, Naming

In European music halls, you might hear "Bis!" instead of "Encore!". In specs, it means updated, etymologically related to "two". I believe the official translation of v.32bis is v.32(a).

Since older specs are rarely obsoleted, it effectively means expanded or more encompassing (if you say "enhanced", I will be forced to sneer again) in most cases.

Jerry

...

^^^^^^^^^^^

Aaaaaahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh! :-)

Jerry

From The Century Dictionary:

Enhance

1. To raise up; lift up; elevate.
2. To lift up to a higher degree; increase to a higher point; carry upward or to a greater extent; heighten; make greater, as prices or one's reputation or dignity ...

It doesn't mean improved or enlarged, and it's a stretch to read "more encompassing" into it. Note that it properly refers to a price increase. So yes, it may have been right in this case. Can one un-scream?

Jerry

V.32bis is a modification or enhancement to V.32.

Regards, Allan

I may have been right in this particular case though.

V.32 A family of 2-wire, duplex modems operating at data signalling rates of up to 9600 bit/s for use on the general switched telephone network and on leased telephone-type circuits

V.32bis .... up to 14 400 bit/s ...

Regards, Allan

bis has that sense. However, in the ITU specs. it specifically means the second version of the spec. There are some specs with later editions, where the name reflects that. For example, the version of V.27 used in FAX machines in V.27ter - the third version. The ITU can be a little wacky with its numbering, though. Some specs have been completely renumbered. G.726 is what used to be G.723, and G.723.1 is now something completely different.

Regards, Steve

I thought "encore" was french.

It usually refers to an enhanced specification. The next enhancement of the spec would be (IIRC) "v.32ter".

encore - 1712, from Fr. encore "still, yet, again," probably from V.L. phrase [hinc ad horam] "from then to this hour."

from "The Online Etymology Dictionary"

Bis is second; ter, third. "Encore" is literally "more". Idioms and prepositions don't translate. Bant on-line translations for bis and ter are "(a)" and "for the third time".

Jerry

bis Bis, adv. [L. bis twice, for duis, fr. root of duo two. See Two, and cf. Bi-.] Twice; -- a word showing that something is, or is to be, repeated; as a passage of music, or an item in accounts. Source: Webster's Revised Unabridged Dictionary, (c) 1996, 1998 MICRA, Inc.

Hi thanks for the explanations. I got that. Now I have got some more questions Does a bis or ter rec replace the previous version? is it mandatory? and: V.29 is built on most of the analog modems you can buy these days. the ITU recommendation says that it is a Standard for 4 wire leased lines! how does that go together?

Thanks Momo

A specification is almost never replaced. The old one may be disallowed for new manufacture, but even that is rare. The specification for a 1200 Baud modem is still just that, but later ones, while compatible with it, go to higher rates.

Jerry

I don't believe there's any requirement for a manufacturer to use only the latest spec. There is still plenty of recent equipment, that runs at only

That's a whole different series. Telephone system modems are divided into two main groups, 2 wire and 4 wire. The modems used on most dial up phone systems are 2 wire, though I have seen 4 wire dial up modems. Modems used on leased lines are generally 4 wire. At one time, 4 wire modems were often faster than 2 wire modems, because they could use the entire bandwidth of the voice channel in each direction, whereas a 2 wire modem had to divide the bandwidth, between the two direections. However, with modern technology, that's no longer the concern it used to be.

BTW, it's not polite to e-mail a response that should be posted only in the newsgroup. E-mail replies should only be used, when the discussion no longer belongs in the newsgroup, because it's way off topic or contains personal info.